EN Standard Steel Plate

EN Standard Steel Plate

Leeco® Steel offers structural steel plate that meets the European standard for structural steel. We are an EN standard steel plate distributor for grades including S235, S275, S355, S420, S690 and S890.

The EN 10025: 2004 encompasses a broader range of structural metallic products and divides them into six basic categories:

  • General-purpose steels
  • Non-alloy structural steels
  • Normalized / normalized-rolled weldable fine grain structural steels
  • Thermo mechanically-rolled weldable fine grain structural steel
  • Atmospheric corrosion resistant structural steel ("weathering steel")
  • High strength, quenched and tempered structural steel
european standard steel plate

Within these six categories are individual grades. The foundation of each grade within the EN 10025 standard is the material’s tested yield strength measured in megapascals (1 MPa = 0.145 ksi). Each structural steel grade begins with an "S" and is followed by suffixes that represent variations in the specific requirement for that structural application.

Example: S355K2C+N

  • "S" - Structural steel
  • "355" - 355 MPa / 51,486 PSI
  • "K2" - Longitudinal Charpy V-notch Impact 40 J @ -20 degrees C
  • "C" - Grade suitable for cold forming
  • "+N" - Supply condition normalized or normalized rolled

How do EN Standards Compare to ASTM Standards?

As projects required to meet EN Specifications become more common in the U.S., primarily due to growth in wind energy, the American Society for Testing Materials (ASTM) implemented a criterion for easier substitution of EN materials with ASTM materials. These substitutions can help manufacturers more readily source the steel plate materials they need for their project. 

While some EN grades may not have an ASTM equivalent, several grades – such as S355 – have a readily available ASTM substitute grade. These substitute grades may be certified to meet EN Standards through rigorous testing and quality assurance methods.

Spec Grade Certification
S235 EN Standard View Details
S275 EN Standard View Details
S355 EN Standard View Details
S420 EN Standard View Details
S690 EN Standard View Details
S890 EN Standard View Details

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